【摘要】 叙述了PCM(脉码调制)基群高集成数字终端设备,即一次群数字复接设备。该系统采用了8098单片机及超高集成外围电路,只用较少的硬件和适当的软件便完成了复接功能。该设备体积小、功耗低、性能稳定,具有实用价值。更多还原

【Abstract】 A PCM primary group super-large-scale IC digital trunk terminal device is described, which consists of a 8089 single chip computer and super-large-scale IC peripheral circuitry Its hardware is simple adapted with suitable software to perform the multiplexor function. It has the merits of compact, low power consumption , stable in performanec and worthy for practising.更多还原